Stockholder's Equity (Deficit) - Summary of Issued, Cancelled and Repurchased Shares of Common Stock (Detail) - $ / shares		3 Months Ended	12 Months Ended
	Jul. 27, 2020	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock issued, shares	1,786,739			42,415
Common stock issued, Shares				$ 31.60
Number of common stock shares issued in connection with business acquisition			791,139	150,439	264,582
Acquisitions, Average Price per Share			$ 31.60	$ 26.90	$ 20.26
Redemption of Series A-1, Shares			1,786,739
Redemption of Series A-1, Average Price per Share			$ 15.00
Exercise of warrants options, Shares			2,534,239
Exercise of warrants options, Average Price per Share			$ 0.01
Exercise of options, Shares			47,600	27,350	5,000
Exercise of options, Average Price per Share			$ 8.06	$ 6.16	$ 6.03
Restricted shares, net			20,488	12,132	184,400
Restricted shares net, Average Price per Share			$ 24.00	$ 18.82	$ 13.64
Cancellation of shares			(117,785)
Cancellation of shares, Average Price per Share			$ 17.15
Conversion of convertible preferred stock into common stock, shares					674,008
Common Stock Issued and Cancelled, Average Price per share					$ 22.20
Common Stock Issued and Cancelled, Shares			16,562,420	232,336	850,276
Common Stock Issued and Cancelled, Average Price per share			$ 13.72	$ 24.89	$ 30.10
IPO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock issued, shares	11,500,000	11,500,000	11,500,000
Common stock issued, Shares			$ 15.00